Mum shares heartbreaking first question asked by her son

Kerry and David Bloch thought they'd never be able to have children, and then a miracle arrived.

The Florida couple welcomed a son, David, and treasured their little boy.

It was when he turned four that they began to notice he had signs of severe Autism Spectrum Disorder (ASD).

Like many children with autism, David went from reaching all of his milestones to losing his abilities to function and communicate.

Kerry is her son's full-time carer. (Twitter)

David stopped speaking, and to this day only talks in single words when prompted. He is now 21 and his mum says he can go days without saying a word.

He also suffers from a medical condition making it even more difficult for him to make friends.

"David has severe immunodeficiency so his schooling is through Hospital Homebound," Kerry tells 9Honey. "That is why he has no friends."

Kerry is her son's full-time carer and says David has become her best friend but she knows her son is lonely.

All David want is to have friends. (Twitter)

A few weeks ago, her mostly non-verbal son suddenly and spontaneously spoke. He turned to his mum and said: "I love Jaguars", referencing his favourite football team, the Jacksonville Jaguars.

A few days later, David said to his mum: "Would someone like me?"

Kerry admits this brought her to tears and she says she shared the moment on Twitter on behalf of all autism families.

"I know most families dealing with autism are isolated and alone," she tells 9Honey. "That on-one cares about them. I want to draw attention to severe autism. It's heartbreaking and I want these kids helped and loved."

Kerry told her son that she and his dad both like him and love him, as well as God and Jesus and his late grandmother.

"And I said, 'I'm sure anybody that met you would like you,'" she added.

Kerry shared David's question on her Twitter account @dsmom58, where she shares updates on her son with other parents of children with autism, and the response has been incredible.

Thousands of people have liked the tweet, shared it, and posted similar updates on their ASD children.

"My Twitter tweet was sent to encourage other families dealing with what we are going through," she tells 9Honey. "To never give up hope and to never give up on your child."

Autism families around the world have since contacted Kerry and David, sharing stories about their children and offering comfort through the isolation.